c# - 如何检查文件是否是 C# 中的 SQLite 数据库？

Question

SQLiteConnection.Open 在打开非数据库文件时不会抛出异常。

private void openDatabase()
{
    sqlite = new SQLiteConnection("Data Source=" + this.filePath + ";Version=3;");

    try
    {
        sqlite.Open();
    }
    catch(SQLiteException e)
    {
        MessageBox.Show(e.Message + e.StackTrace);
    }
}

如何确定文件是否为 SQLite 数据库？

Answer 1

读取前 16 个字节，然后检查字符串“SQLite Format”

VB.Net

    Dim bytes(16) As Byte
    Using fs As New IO.FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
        fs.Read(bytes, 0, 16)
    End Using
    Dim chkStr As String = System.Text.ASCIIEncoding.ASCII.GetString(bytes)
    Return chkStr.Contains("SQLite format")

更新 2

C#

    byte[] bytes = new byte[17];
    using (IO.FileStream fs = new IO.FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
    fs.Read(bytes, 0, 16);
    }
    string chkStr = System.Text.ASCIIEncoding.ASCII.GetString(bytes);
    return chkStr.Contains("SQLite format");